Al-Mg binary was made by conventional pressing-and-sintering techniques

and its forming parameters were approached based on single variable method. The desirable Al-Mg alloy containing 5% Mg can be successfully prepared with 300MPa pressure at 600℃ sintering temperature

whose relative density reaches 95%. Based on above mentioned processing parameters

Al-5Mg-1Si alloy similar to ZL303 alloy in components can be prepared. The hardness of the prepared alloy is approximate to that of ZL303. In addition

the microstructure of the alloy is observed by OM （optical microscope）. Meanwhile

the roles of Zn and Sn in liquid sintering system were analyzed by XRD（X-ray diffraction）.